Robina Li

Welcome to My Technical Blog

Exploring algorithms, data structures, and software engineering insights through LeetCode solutions in Python.
NOTE: This blog is still under construction and some python code blocks may not be rendered correctly when converted from C++ with AI.

169+ Problems Solved

3 Difficulty Levels

20+ Categories

[Medium] 1962. Remove Stones to Minimize the Total

leetcodemediumarraygreedyheap

Apr 21, 2026

[Medium] 2952. Minimum Number of Coins to be Added

leetcodemediumarraygreedysorting

Apr 21, 2026

[Medium] 2592. Maximize Greatness of an Array

leetcodemediumarraygreedysorting

Apr 20, 2026

[Medium] 2571. Minimum Operations to Reduce an Integer to 0

leetcodemediummathgreedybit-manipulation

Apr 19, 2026

[Medium] 2539. Count the Number of Good Subsequences

leetcodemediumstringcombinatoricsmathhash-map

Apr 18, 2026

[Medium] 329. Longest Increasing Path in a Matrix

leetcodemediummatrixdynamic-programmingdfs

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Feb 7, 2026

[Medium] 1488. Avoid Flood in The City

leetcodemediumarraygreedybinary-searchset

Feb 6, 2026

[Medium] 875. Koko Eating Bananas

leetcodemediumarraybinary-search

Feb 6, 2026

[Medium] 532. K-diff Pairs in an Array

leetcodemediumarrayhash-table

Feb 6, 2026

[Medium] 3439. Reschedule Meetings for Maximum Free Time I

leetcodemediumarrayintervalssliding-windowprefix-sum

Feb 6, 2026

[Easy] 252. Meeting Rooms

leetcodeeasyarraysortingintervals

Feb 5, 2026

[Medium] 1109. Corporate Flight Bookings

leetcodemediumarrayprefix-sumdifference-array

Feb 4, 2026

[Medium] 787. Cheapest Flights Within K Stops

leetcodemediumgraphshortest-pathdynamic-programmingbellman-ford

Feb 3, 2026

[Medium] 743. Network Delay Time

leetcodemediumgraphshortest-pathdijkstra

Feb 2, 2026

[Medium] 974. Subarray Sums Divisible by K

leetcodemediumarrayhash-tableprefix-sum

Feb 2, 2026

[Hard] 843. Guess the Word

leetcodehardarraystringinteractiveminmax

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